Improvement in haeeow



C. STELLER.

HARROW PATENTED l @uiten tstra ,gettati @fitte Letters Patent No. 74,626, dated February 18, 1868.

. IM'EBOVEMENTIN HARROW.

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T0 ALL WHOMV IT MAY CONOERN: l I Y `Beit known that I, C. E. STr-LLEB, of Chicago, in the county ot Cook, in the State ot' Illinois,.havc invented a new and useful Improvemmt in Harrows; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, rankingsJ part of this specication, in whichf' y Figure 1 is a plan view of my invention. Figure 2, an elevation, taken parallel with a line, X X. Figure 3, a broken sectional elevation of one of the frame-pieces, showinga tooth and the arrangement for holding it in position.

Figure 4, 'a plan view of the collar' which supports the head of the tooth. Figure 5, an inverted view of apart of the frame, showing the support for the tooth at the under side.

IThe nature of my invention consists Iin equalizing. a double line of draught, and coupling the rear endsof a two-winged harrow with a rod and staples of such length as will set the rails for the teeth to track equal distances apart, and also permit the wings to have-independent motions relative to the lineof draught, whereby they will work on the surface of uneven ground; and inmaking enlarged openings through the rails, whereby round teeth may have a rotary and lateral motion to readily relieve them from sods and other obstructions, which usually clog the common harrow; and, further, in attaching metal supports, for'the teeth, at the bottom 'of the harrow, in such manner as'to havel the face ofthe supports. at right angles with the line of draught, for lthe purpose of giving the teeth an easy lateral motion, and not wear the rails; also, in the use of metal collars for supporting the Aheads ofthe teeth, and caps for holding them iu the rails'.v I

In order to give a. correct understanding of my invention, I have marked corresponding partswith similar letters, and will now give a detailed deseription.- n

S S represent the two wings of the ha'rrow, made withl rails A, cross-pieces B, and hung by al joint, D, Yin the usual manner. The rear ends of the wings are set at such an acute angle as will cause the teeth, H, tc., to track equal distances apart, and are held in position by ered, C, iig. 1, andvstaple-joints P P, so `as to permit them to work independeutlyofeach other,as when-passing over uneven ground.' The opening,in which a tooth is made to work, is clearly shown at the enlarged gs..3, 4, and A5, asis also the other parts used in connection therewith, I represents a. support for tooth H,g`s. and 5, whose face, 5J, is set at right angles" with the draught-line W, and may be sunk in the under side of rail A, or be held in place by screws, as most convenient, the object being to provide a smooth surface` for the tooth tomove on, andlprotect the wood from wear. A

collar, J, figs. 3 and '4, is sunk inthe top of rail A, and used to support the head ofA tooth H. An Viron ring,

however, muy be secured by screws to the top of A, and thus secure all of the strength possible. AThe head of tooth H is made large, as seen at n, to prevent falling` out, and is held in position, below rail A, by a cap, I,

secured to it by screws or bolts, as desirable. lThe cap shownv is made of thin wrought iron, but may be cast, and tit closely outhe head of the tooth.V vI am notpart-icular as to this, only so that the tooth is prevented fro coming out'at the top ofthe rail'.

In this last descriptionl have only referred to one tooth and its fastenings, but as all ot' theteeth are secured in the same manner, a, harrow maybe made with any required number; nor in thisrespect is it necessary to have the barrow lthe same shape. I-t will'be seen at iig. l that the hooks for attaching the evener F are secured to the crosspieees B Bat such points as will cause draught-lines, indicated at W W, to divide the two wings in equal part-s, thereby preventing undue strain onthe rod C, and leaving it free to work on .staples I P.

Having thus deseribedmy invention, what I'Claim, Aand desire' to secure by Letters Patent, is-l 1. The combination of supports I and teeth H, substantially as end for the purpose herein specified. 2. The combination of teeth H, collars K, and caps I, substantially as and for the purpose set forth. 3. The round teeth l-I, arranged to operate in enlarged holes, L, substantially as described. 4. The rod C, secured by staples P P, in combination with-joint D, arranged substantially as and for the purpose set forth.

5. The rods EE, in Vc'ombln:tt-ion with rod C and-joint D, arranged to operate as and for the purpose described.

C. STELLER.-

Witnesses:

` G, L. CHAPIN,

'A. HMWARD. 

